QDockWidget setTitleBarWidget() example with "default" button style

gde23

Hello,

I want to add a maximize-button to the QDockWidget titlebar that calls QDockWidget::showFullScreen();

However I cannot find any example that shows how to set up a custom titlebar widget including buttons that look like usually. (the widget should contain all the things that are there by default (icon, title-string, close and dock button) as well as the additional maximize button.

I can add buttons like this

QWidget *title_bar = new QWidget();
QHBoxLayout* layout = new QHBoxLayout();
title_bar->setLayout(layout);
layout->addWidget(new QToolButton());

but then they do not look like the auto generated ones when using the default titlebar.

SGaist

Hi,

Dock widgets are not meant to show standard widget decoration and thus controls.

Can you explain your use case ?

gde23

Hi,

I simply want to add a maximize button to the dockWidget so i can undock it and then click on the button to make it fullscreen.
alt text
Like the button on the mainwindow (red circle) also on the dockwidget.

SGaist

Then you can design your own and use setTitleBarWidget.

gde23

But how do i make the buttons on my own titlebarwidget look like those in the screenshot above?
I can get the functionality I need by doing something like this:

QWidget *title_bar = new QWidget();
QHBoxLayout* layout = new QHBoxLayout();
title_bar->setLayout(layout);
layout->addWidget(new QPushButton());
dock_widget->setTitleBarWidget(title_bar);

but then the button will look like a normal button and not like the other titelbar-buttons on the dock widgets.
So the question is where the style for the buttons that are used for the dockwidget's titelbar come from and how i can apply the style/icon to my own buttons.

raven-worx

@gde23
i don't know if it returns the desired icon, but worth a try:

QIcon icon = widget->style()->standardIcon(QStyle::SP_TitleBarMaxButton, 0, widget);
button->setIcon( icon );

On what platform/desktop are you running on?

Otherwise (if possible) you can set a breakpoint in the Qt source code and step through the code and check where the icon is taken from.

gde23

@raven-worx: Thanks a lot. that's exactly what i was looking for